4K high score to join the laser television camp and then start a new wave?
LCD TVs have dominated the living room for more than 20 years. Now the price of LCD TVs is very favorable, but the size of the screen can no longer continue to rise. How can we satisfy people's pursuit of large screens? Currently, there are many options for display technology: In fact, LCD TVs Can also be done 120 inches, but the price is not cost-effective hundreds of thousands; LCD stitching, the picture is too obvious joints; LED large-screen images are too rough, so only the projection can achieve large-screen home use.
4K high score to join the laser television camp and then start a new wave?
However, home projectors have not been very popular. In the past, projectors have been difficult to enter the living room due to various problems. The first is the problem of brightness, ordinary home projector brightness is not high enough, then in the living room, then some do not see clearly the picture; followed by the problem of projection distance, the average person living room is not so big, there is no hope of achieving large screen; It is the problem of the life of the light source. The traditional bulb light source has a lifetime of only a few thousand hours, and the brightness decays too quickly, which is also not suitable for long-term use. But with the laser light source, all this is solved.
Many people are now familiar with the concept of laser television. Laser TV is precisely optimized for the above three issues. The first is the lens. The lens used by a traditional projector, even if it is a fish-eye short-focus lens, requires a relatively long projection distance before it can achieve a large-screen projection. The lens of the laser television is a projector light path system using a reflective ultra-short focus. In this way, a screen size of about 100 inches can be achieved at a distance of 40 cm.
This light path system is actually quite understandable. Through a special process, the reflected light path can be produced so that large-sized images can be projected over a short distance. Of course, this is not as simple as putting a few mirrors in the light path. Because this light path needs to ensure that the brightness of the picture cannot be greatly attenuated, and at the same time, the color of the picture is guaranteed to be normal, and distortion must not occur. Therefore, only advanced optical processing can produce such a light path. The lens problem is solved, and the other two problems laser light source also have a method to deal with.
Other advantages of laser light source
The laser light source can solve the brightness problem of the projector. Laser is a new light source, with low energy consumption, high brightness, and long life, so it can be said that there is a unique advantage in using the projector. The brightness of the living room is relatively high. So if used in this environment, the projector must use a high-brightness light source, so the laser becomes the first choice.
Current laser televisions can easily achieve a brightness of 3,000 lumens. Of course, this brightness can be even higher. Some products can already achieve tens of thousands of lumens, but such a light source system requires a lot of space. The volume of the laser television should not be too large, and the energy consumption should not be too high. Considering the current laser light source technology to achieve 3000 lumens is the most appropriate, and the brightness is enough for home use. With the specific look of the light curtain, the brightness of the screen is still very clear even when the brightness is on.
In addition, the lifespan of traditional light bulbs is only a few thousand hours, which is too short for home use. While satisfying high brightness, the laser solves the problem of using time. In general, laser light sources have a lifetime of 30,000 hours, and the attenuation speed is relatively slow, so that the projector can maintain brightness stability for a long time. Traditional light bulbs attenuate rapidly, and after a few hundred hours the brightness is reduced to 80%. With a laser light source, long-term viewing is no longer a problem.
Laser light source is not perfect
Of course, the laser light source is not perfect. Although the color gamut of the laser light source is theoretically high, due to the limited technology, the color gamut of the laser light source is indeed improved, but the color quasi-adjustment is not very good. The picture of the laser light source projector is generally cold, which is not only the problem of color temperature, but mainly the technical problem of the current laser light source.
Logically, using an RGB laser as the light source is ideal, but the cost of this solution is high and it is currently difficult to use on ordinary home projectors. Therefore, it is a laser + fluorescence solution that is more acceptable to the technicians. That is blue laser mixing yellow phosphor solution. The cost of such a plan is relatively low. However, this scheme also causes inaccuracies in the color of the laser light source.
In addition, we also said above, laser televisions use reflective ultra-short focal lens, this kind of light projected from obliquely or obliquely upward angle when projected on the common screen, the screen distortion will appear. Therefore, to buy a laser TV must be matched with a special anti-light curtain. Basically, there are laser television sales brands, but also will configure a light curtain for users, but this screen is the need to pay a separate fee, about 4000 yuan level.
According to different light-resistant principles, light-resistance curtains have the use of physical structures to achieve light-resistance effects, and optical coatings are also used to achieve light-resistance. Ultra-short focal projectors are generally used for laser televisions or projection televisions, with the use of physical anti-glare screens. This kind of screen is still very difficult to buy at home, although there are imitations on Taobao, but the effect is greatly reduced. At present, the mainstream of the light curtain is to buy foreign curtains, or to buy foreign curtain coating, the domestic production of curtain light resistance effect is not particularly good.
4K products appear in the market and wave
Above, we analyzed the advantages and disadvantages of laser television. It can be seen that the advantage of laser television is obvious. Therefore, the current market is still very hot. At present, there are many domestic brands that produce laser television. There are both traditional projector brands and new-entry brands. There are also some television brands that are beginning to seize this market.
From the basic hardware configuration, everyone produces 1080P resolution products. Although this picture can meet the needs of the average user, but in the field of LCD TVs, 4K products are everywhere, so laser TVs want to compete in this market, the increase in resolution is imperative.
Recently, domestic TV brands broke news that DLP 4K high score laser theater will be released. Although it is called laser cinema, there is not much difference between the products mentioned above and the most noteworthy is the improvement of resolution. The emergence of this product also fills the gaps in current laser TVs without new 4K resolution. It also filled a new firewood for the outbreak of this market.
In fact, in the field of projectors, 4K products are really not much, because the upstream chip manufacturers have not introduced 4K projector chips. Currently, only a few brands such as Sony and JVC have 4K projector products on the market. However, Sony did not do anything about laser television. JVC is targeting the high-end home theater market, and it has not followed up on laser television. This 4K new product is still very innovative. Judging from the current technical conditions, laser television is the only economically viable solution for achieving large screen sizes. The emergence of 4K products has raised the attention of this market again.
4K high score to join the laser television camp and then start a new wave?
However, home projectors have not been very popular. In the past, projectors have been difficult to enter the living room due to various problems. The first is the problem of brightness, ordinary home projector brightness is not high enough, then in the living room, then some do not see clearly the picture; followed by the problem of projection distance, the average person living room is not so big, there is no hope of achieving large screen; It is the problem of the life of the light source. The traditional bulb light source has a lifetime of only a few thousand hours, and the brightness decays too quickly, which is also not suitable for long-term use. But with the laser light source, all this is solved.
Laser TV starts and LCD TV grabs the market
Many people are now familiar with the concept of laser television. Laser TV is precisely optimized for the above three issues. The first is the lens. The lens used by a traditional projector, even if it is a fish-eye short-focus lens, requires a relatively long projection distance before it can achieve a large-screen projection. The lens of the laser television is a projector light path system using a reflective ultra-short focus. In this way, a screen size of about 100 inches can be achieved at a distance of 40 cm.
This light path system is actually quite understandable. Through a special process, the reflected light path can be produced so that large-sized images can be projected over a short distance. Of course, this is not as simple as putting a few mirrors in the light path. Because this light path needs to ensure that the brightness of the picture cannot be greatly attenuated, and at the same time, the color of the picture is guaranteed to be normal, and distortion must not occur. Therefore, only advanced optical processing can produce such a light path. The lens problem is solved, and the other two problems laser light source also have a method to deal with.
Other advantages of laser light source
The laser light source can solve the brightness problem of the projector. Laser is a new light source, with low energy consumption, high brightness, and long life, so it can be said that there is a unique advantage in using the projector. The brightness of the living room is relatively high. So if used in this environment, the projector must use a high-brightness light source, so the laser becomes the first choice.
The technical principle of laser light source
Current laser televisions can easily achieve a brightness of 3,000 lumens. Of course, this brightness can be even higher. Some products can already achieve tens of thousands of lumens, but such a light source system requires a lot of space. The volume of the laser television should not be too large, and the energy consumption should not be too high. Considering the current laser light source technology to achieve 3000 lumens is the most appropriate, and the brightness is enough for home use. With the specific look of the light curtain, the brightness of the screen is still very clear even when the brightness is on.
The advantages of laser light source
In addition, the lifespan of traditional light bulbs is only a few thousand hours, which is too short for home use. While satisfying high brightness, the laser solves the problem of using time. In general, laser light sources have a lifetime of 30,000 hours, and the attenuation speed is relatively slow, so that the projector can maintain brightness stability for a long time. Traditional light bulbs attenuate rapidly, and after a few hundred hours the brightness is reduced to 80%. With a laser light source, long-term viewing is no longer a problem.
Laser light source is not perfect
Of course, the laser light source is not perfect. Although the color gamut of the laser light source is theoretically high, due to the limited technology, the color gamut of the laser light source is indeed improved, but the color quasi-adjustment is not very good. The picture of the laser light source projector is generally cold, which is not only the problem of color temperature, but mainly the technical problem of the current laser light source.
Laser light source color performance is not currently very accurate
Logically, using an RGB laser as the light source is ideal, but the cost of this solution is high and it is currently difficult to use on ordinary home projectors. Therefore, it is a laser + fluorescence solution that is more acceptable to the technicians. That is blue laser mixing yellow phosphor solution. The cost of such a plan is relatively low. However, this scheme also causes inaccuracies in the color of the laser light source.
Ordinary curtains tend to appear curved when they are presented with reflective ultra-short focal projection
In addition, we also said above, laser televisions use reflective ultra-short focal lens, this kind of light projected from obliquely or obliquely upward angle when projected on the common screen, the screen distortion will appear. Therefore, to buy a laser TV must be matched with a special anti-light curtain. Basically, there are laser television sales brands, but also will configure a light curtain for users, but this screen is the need to pay a separate fee, about 4000 yuan level.
According to different light-resistant principles, light-resistance curtains have the use of physical structures to achieve light-resistance effects, and optical coatings are also used to achieve light-resistance. Ultra-short focal projectors are generally used for laser televisions or projection televisions, with the use of physical anti-glare screens. This kind of screen is still very difficult to buy at home, although there are imitations on Taobao, but the effect is greatly reduced. At present, the mainstream of the light curtain is to buy foreign curtains, or to buy foreign curtain coating, the domestic production of curtain light resistance effect is not particularly good.
4K products appear in the market and wave
Above, we analyzed the advantages and disadvantages of laser television. It can be seen that the advantage of laser television is obvious. Therefore, the current market is still very hot. At present, there are many domestic brands that produce laser television. There are both traditional projector brands and new-entry brands. There are also some television brands that are beginning to seize this market.
From the basic hardware configuration, everyone produces 1080P resolution products. Although this picture can meet the needs of the average user, but in the field of LCD TVs, 4K products are everywhere, so laser TVs want to compete in this market, the increase in resolution is imperative.
Reflective ultra-short focal projector new products are more and more
Recently, domestic TV brands broke news that DLP 4K high score laser theater will be released. Although it is called laser cinema, there is not much difference between the products mentioned above and the most noteworthy is the improvement of resolution. The emergence of this product also fills the gaps in current laser TVs without new 4K resolution. It also filled a new firewood for the outbreak of this market.
4K high score laser TV is about to debut
In fact, in the field of projectors, 4K products are really not much, because the upstream chip manufacturers have not introduced 4K projector chips. Currently, only a few brands such as Sony and JVC have 4K projector products on the market. However, Sony did not do anything about laser television. JVC is targeting the high-end home theater market, and it has not followed up on laser television. This 4K new product is still very innovative. Judging from the current technical conditions, laser television is the only economically viable solution for achieving large screen sizes. The emergence of 4K products has raised the attention of this market again.
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